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As natural resources are increasingly becoming more scarce and common methods of providing electrical power and heat are becoming much more expensive many people today seem to be looking towards renewable sources of energy. Probably the very first one that comes to mind for the majority of consumers is usually solar power. Solar power is harnessing the power put off from the sun to provide electric supply and heat.

Despite the fact that not many people have an understanding of the theory, use of solar energy is well known in many areas of the world. Energy provided by the sun has been used for many years now, both knowingly and unknowingly. Early users of solar energy used a simple box to collect the sun's rays to cook their food. These days solar energy is chiefly produced through collecting and focusing the rays of the sun in order to perform some type of valuable work. Worldwide however, only a very small percentage of the total energy the earth receives from the sun is actually being harnessed . Much of this disparity in the amount of energy being harnessed can be attributed to the abundant supplies of fossil fuels which has made solar energy less attractive than those sources of energy

When harnessing solar energy from the sun, people use heat engines as well as photovoltaic devices. These technologies can either be passive or active technologies based on the manner with which they harness and convert the energy. Photovoltaic systems and solar cells are known to convert the energy into electricity and can be used to power watches and calculators. Some of these materials can be used to store heat for use later when it is cool. Other materials can be used to redirect light or deflect light to keep areas cool during the summer.

Presently there are a wide choice of solar energy solutions utilized worldwide. Illumination is most likely the most common application. Skylights and windows can be employed to reduce the quantity of power needed to power artificial lights. Heating water or utilizing a large thermal mass for space heating are a small number of additional common solar energy applications. People also use solar water heaters to heat up pools. Popular solar harnessing systems consist of the use of solar panels to convert warmth from the sun into electricity. The biggest challenge with solar energy is the fact that it is most effective during hours of sunlight when there is very minimal cloud cover. This limits the usage of solar energy without an capacity to store the power.

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